Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
va thanh » gia thanh, ban thanh, va tinh
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
cua cu » cua chu, cua cau, cua su
o hoi » co hoi, o hoc, o hai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang ((xa hoi) or (o hoi)). ((hieu ve) or (hieu va)) cam duc va thanh dai cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang ((xa hoi) OR (o hoi)). ((hieu ve) OR (hieu va)) cam duc va thanh dai cua cu.
• Adding a wildcard symbol may retrieve word variants: tu san ky nang ((xa hoi) or (o hoi)). ((hieu ve) or (hieu va)) cam duc va thanh dai cua cu*.